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Diffstat (limited to 'qemu_mode/README.wine.md')
| -rw-r--r-- | qemu_mode/README.wine.md | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/qemu_mode/README.wine.md b/qemu_mode/README.wine.md index 567901cd..ee1ef58a 100644 --- a/qemu_mode/README.wine.md +++ b/qemu_mode/README.wine.md @@ -1,21 +1,23 @@ # How to troubleshoot AFL++'s wine mode ## 1) Debugging -To turn on wine debugging use the `WINEDEBUG` environment variable, -e.g. `WINEDEBUG=+timestamp,+tid,+loaddll`. + +To turn on wine debugging, use the `WINEDEBUG` environment variable, e.g., +`WINEDEBUG=+timestamp,+tid,+loaddll`. ## 2) LoadLibraryA workaround -The forked process fails to load libraries loaded via `LoadLibrary` -if the load happens after the entry point (error code: 87). To resolve -this issue, one needs to load any external libraries before the fork happens. -An early DLL load can be achieved by adding the DLL name into the `Import Directory` -in the PE file. Such an entry can be added manually in any PE editor. +The forked process fails to load libraries loaded via `LoadLibrary` if the load +happens after the entry point (error code: 87). To resolve this issue, one needs +to load any external libraries before the fork happens. + +An early DLL load can be achieved by adding the DLL name into the `Import +Directory` in the PE file. Such an entry can be added manually in any PE editor. -Alternativly, one can generate a `.lib` file from the DLL exports and link -them together with the harness to create an entry in the `Import Directory`. -Use `dumpbin /exports <filename>.dll` to extract the exports and paste the -exported function names into a `.def` file. Use `lib /def:<deffile> /OUT:<libfile>` -to generate a `.lib` and add the library to the linker options. Once the usage of -an export is detected (`__declspec(dllimport)`), the -linker adds the early DLL load. \ No newline at end of file +Alternatively, one can generate a `.lib` file from the DLL exports and link them +together with the harness to create an entry in the `Import Directory`. Use +`dumpbin /exports <filename>.dll` to extract the exports and paste the exported +function names into a `.def` file. Use `lib /def:<deffile> /OUT:<libfile>` to +generate a `.lib` and add the library to the linker options. Once the usage of +an export is detected (`__declspec(dllimport)`), the linker adds the early DLL +load. \ No newline at end of file |